Manufacture of drive-screws



(No Model.)

H. K. JONES. MANUFACTURE OF DRIVE SCREWS. v

o. 335.132. Patented Feb. 2, 1886.

N, PETERS Plwko-Lilhographar, Waxhlnglon, D. c.

UNITED STATES v PATENT OFFICE.

HORACE K. JONES, OF HARTFORD, ASSIGN OR TO THE RUSSELL & ERWINMANUFACTURING COMPANY, OF NEW BRITAIN, CONNECTICUT.

MANUFACTURE OF DRIVE-SCREWS.

EPECIPI CATION forming part of Letters Patent No. 335,132, datedFebruary 2, 1886.

Application filed August 4, 1885.

To all whom it may concern:

Be it known that L'HORAOE K. JoNEs, a citizen of the United States,residing at Hartford, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements in theManufacture of Drive Screws or Nails, of which the following is aspecification.

My invention relates to improvements in making drive screws or nailsfrom wire; and the objects of my improvement are to produce a betterdrive screw or nail than heretofore and to produce the same at a smallcost.

In the accompanying drawings, Figure 1 represents in side elevation apiece of wire having formed thereon three portions containing each aspiral rib or barb, the formation of said barbed portions of the properlength for one nail being the first step in the manufacture of nails bymy process. Fig. 2 represents a like piece of wire having a head formedthereon, the forming of which head is the second step in my process.Fig. 3 represents in side elevation and end view a like piece of headedwire having its head slotted, the slotting of the head being the thirdstep of my process in the preferred order, provided nails with slottedheads are desired. Fig. at represents a finished nail as cut from theheaded end of awire, like Fig. 2 or 3, and pointed, cutting off the wireand pointing it being the last step in my process; and Fig. 5 representsa wire similar to Fig. 1, but having a different form of barb.

Nails or screws, whichever they may be called,may be made by my processand have the barbed portion of either of the forms shown, or of anydesired form, when the article is designed in use to be driven fullyhome by a hammer. If, however, the article is designed to be driven homeby a screw-driver, after being started by a hammer, it is essential thatthe barbed portion be in the form of a screw-thread.

There are many ways of forming the barbed portions, and I intend to makemy machinery for so doing the subject of Letters Patent. These barbs canbe formed by intermittinglyacting edge-bearing rollers, by groovedrollers having alternate smooth and barbed portions, by reciprocatingswaging-dies, and by other means. I take the wire in the coil or in rodsSerial No. 173,498. (No model.)

and feed it to the mechanism for barbing it, forming one or more barbedportions, 0, leaving a continuous plain portion, each of which barbedportions is as long lengthwise with the wire as is desired to have thebarbed portion of one finished nail, while each contiguous plain portionis long enough so that the remainder of the nail may be formedtherefrom. The whole wire may be thus barbed at regular intervalsthroughout its length before any subsequent operation is performed but Iprefer to so construct a machine that the subsequent operations willbegin after two or three or other given number of barbed portions 0 havebeen formed, and then have all the operations go on simultaneously inregular order. I have referred to these barbed portions 0 as beingformed at regular intervals on the wire. The intermediate portionsconstitute the smooth and plain portions (1, from which the heads areformed, and a smooth body of any desired length under the head. Ifdesired, the barbed portion may, however, extend well up to the head ofthe finished nail. The next step after forming the barbed portion 0 isto form the head f by upsetting in any ordinary manner, changing thestock from the form illus trated in Fig. l to that shown in Fig. 2.Sometimes the heads of barbed nails are not slotted, and if it isdesired to produce such nails the next and final step in the process isto cut off the stock at the lower end of the barbed portion-forinstance, on the line as x of Fig. 2 and form a point on the end of thebarbed portion thus cut off. I prefer to cutoff the stock and swage thispoint at one operation by means of a combined shearing or cutting dieand a swaging-die, thereby forming What is known as the ordinarycut-point of wire nails, and changing the stock from the formillustrated in Fig. 2 to that shown in Fig. 4, in which it will be seenthat the barbs or threads extend to the tapering portion which forms thepoint of the nail.

In case it is desired to provide the nail-head with a slot for turningthe nail or screw axially with a screw-driver, I form the slot after thewire has been headed, as in Fig. 2, and before the nail is cut from thewire, thereby changing the stock from the form illustrated in Fig. 2 tothat shown in Fig. 3. After the head has been thus slotted the nail iscut off and pointed, as before described.

- solid.

The machinery, dies, or tools referred to in this specification form nopart of my process, and cannot properly be claimed in this application.For these reasons all right to patent the same is hereby reserved.

I am aware that a prior patent shows and describes a machine for makingwire nails,into which the wire is fed, then gripped by holding-dieshaving a roughened surface, then headed while held in said dies, thencut off and pointed by a cut-point, and incidental to the roughenedholdingdies the nails were slightly marked or roughened for a shortdistance under their head; and that another patent shows and describes amachine for making machine-screws in which a rod is grasped byholding-dies and fed forward a given distance; then reduced to form thebody of the screw;

then the thread was cut on the forward end of said reduced portion; thenthe partly-formed screw was severed from the rod by a partingtool,leaving said screw in the thread-cutting die; then the head was formedby a propershaped tool; then the slot was cut by a saw, and finally thescrew was unscrewed from the cutting-die by a screw-driver. All of saidprior art is hereby disclaimed. 0

I claim as my invention 1. That improvement in the art of formingdrive-screws from a metal rod or wire which consists in first forming ascrew-thread on a portion of the wire contiguous to the point designedfor forming the small end of the nail upward toward the head end,leaving thereon a contiguous plain portion, then upsetting to form ahead on the end of said plain portion, and finally cutting the wire andforming a point thereon at that end of the barbed portion which isfarthest from the head, substantially as described, and for the purposespecified.

2. That improvement in the art of forming drive screws or nails from ametal rod or wire which consists in first barbing a portion of the wirecontiguous to the point designed for Witnesses:

M. S. WIARD, W. O. RUSSELL.

